1 /* $Id: kgdb.h,v 1.2 1998/04/11 17:29:07 geert Exp $
2 * kgdb.h: Defines and declarations for serial line source level
3 * remote debugging of the Linux kernel using gdb.
4 *
5 * PPC Mods (C) 1998 Michael Tesch (tesch@cs.wisc.edu)
6 *
7 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
8 */
9 #ifdef __KERNEL__
10 #ifndef _PPC_KGDB_H
11 #define _PPC_KGDB_H
12
13 #ifndef __ASSEMBLY__
14 /* To initialize the serial, first thing called */
15 extern void zs_kgdb_hook(int tty_num);
16 /* To init the kgdb engine. (called by serial hook)*/
17 extern void set_debug_traps(void);
18
19 /* To enter the debugger explicitly. */
20 extern void breakpoint(void);
21
22 /* For taking exceptions
23 * these are defined in traps.c
24 */
25 extern void (*debugger)(struct pt_regs *regs);
26 extern int (*debugger_bpt)(struct pt_regs *regs);
27 extern int (*debugger_sstep)(struct pt_regs *regs);
28 extern int (*debugger_iabr_match)(struct pt_regs *regs);
29 extern int (*debugger_dabr_match)(struct pt_regs *regs);
30 extern void (*debugger_fault_handler)(struct pt_regs *regs);
31
32 /* What we bring to the party */
33 int kgdb_bpt(struct pt_regs *regs);
34 int kgdb_sstep(struct pt_regs *regs);
35 void kgdb(struct pt_regs *regs);
36 int kgdb_iabr_match(struct pt_regs *regs);
37 int kgdb_dabr_match(struct pt_regs *regs);
38 static void kgdb_fault_handler(struct pt_regs *regs);
39 static void handle_exception (struct pt_regs *regs);
40
41 /*
42 * external low-level support routines (ie macserial.c)
43 */
44 extern void kgdb_interruptible(int); /* control interrupts from serial */
45 extern void putDebugChar(char); /* write a single character */
46 extern char getDebugChar(void); /* read and return a single char */
47
48 #endif /* !(__ASSEMBLY__) */
49 #endif /* !(_PPC_KGDB_H) */
50 #endif /* __KERNEL__ */
51
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